Employee retention is a major concern for many companies. A survey of Americans asked how long they have worked for their current employer (Bureau of Labor Statistics website, December 2015). Consider the following example of sample data of 2000 college graduates who graduated five years ago.

Step-by-step explanation:

Discrete probability distribution can be written as follows

X. Number P(X)

1 . 506 (506/2000) = 0.253

2 390 (390/2000) = 0.195

3 310 (310/2000) = 0.155

4 218 (218/2000) = 0.109

5 576 (576/2000) = 0.288

Solution(b)

For valid discrete probability distribution total probability should be 1

P= 0.253+0.195+0.155+0.109+0.288 = 1

So it is a discrete probability distribution.

Solution(c)

Probability for more than 3 years = p(X=4) + P(X=5) = 0.109+0.288 = 0.397 or 39.7%

answer: 457.14

step-by-step explanation:

205 - 45 = 160

160 / .35 = 457.142857

whole numbers.

step-by-step explanation:

we are given the average monthly rainfall (in millimeters) model r(m) for the years 1900-2009 as a function of the month number m.

as we can see m is taken for the number of months for years 1900-2009.

we know that number of months can't be a negative number or decimal number or a fraction.

so, the number of months could be only positive whole numbers.

therefore, whole numbers is more appropriate for the domain of r.